Due to the nature of wireless communications, transmission and reception of data can never be
guaranteed. Data may be delayed, corrupted (i.e., have errors) or be totally lost. Although significant
delays or losses of data are rare when wireless devices such as the Sierra Wireless modem are used
in a normal manner with a well-constructed network, the Sierra Wireless modem should not be used
in situations where failure to transmit or receive data could result in damage of any kind to the user or
any other party, including but not limited to personal injury, death, or loss of property. Sierra Wireless
accepts no responsibility for damages of any kind resulting from delays or errors in data transmitted or
received using the Sierra Wireless modem, or for failure of the Sierra Wireless modem to transmit or
receive such data.
Safety and Hazards
Do not operate the Sierra Wireless modem in areas where cellular modems are not advised without
proper device certifications. These areas include environments where cellular radio can interfere such
as explosive atmospheres, medical equipment, or any other equipment which may be susceptible to
any form of radio interference. The Sierra Wireless modem can transmit signals that could interfere
with this equipment. Do not operate the Sierra Wireless modem in any aircraft, whether the aircraft is
on the ground or in flight. In aircraft, the Sierra Wireless modem MUST BE POWERED OFF. When
operating, the Sierra Wireless modem can transmit signals that could interfere with various onboard
systems.
Note: Some airlines may permit the use of cellular phones while the aircraft is on the ground and the door
The driver or operator of any vehicle should not operate the Sierra Wireless modem while in control of
a vehicle. Doing so will detract from the driver or operator’s control and operation of that vehicle. In
some states and provinces, operating such communications devices while in control of a vehicle is an
offence.
is open. Sierra Wireless modems may be used at this time.
Limitations of Liability
This manual is provided “as is”. Sierra Wireless makes no warranties of any kind, either expressed or
implied, including any implied warranties of merchantability, fitness for a particular purpose, or
noninfringement. The recipient of the manual shall endorse all risks arising from its use.
The information in this manual is subject to change without notice and does not represent a
commitment on the part of Sierra Wireless. SIERRA WIRELESS AND ITS AFFILIATES
SPECIFICALLY DISCLAIM LIABILITY FOR ANY AND ALL DIRECT, INDIRECT, SPECIAL,
GENERAL, INCIDENTAL, CONSEQUENTIAL, PUNITIVE OR EXEMPLARY DAMAGES INCLUDING,
BUT NOT LIMITED TO, LOSS OF PROFITS OR REVENUE OR ANTICIPATED PROFITS OR
REVENUE ARISING OUT OF THE USE OR INABILITY TO USE ANY SIERRA WIRELESS
PRODUCT, EVEN IF SIERRA WIRELESS AND/OR ITS AFFILIATES HAS BEEN ADVISED OF THE
POSSIBILITY OF SUCH DAMAGES OR THEY ARE FORESEEABLE OR FOR CLAIMS BY ANY
THIRD PARTY.
Notwithstanding the foregoing, in no event shall Sierra Wireless and/or its affiliates aggregate liability
arising under or in connection with the Sierra Wireless product, regardless of the number of events,
occurrences, or claims giving rise to liability, be in excess of the price paid by the purchaser for the
Sierra Wireless product.
41110363 Rev 4.0 October 18, 2017 2
Product Technical Specification
Patents
This product may contain technology developed by or for Sierra Wireless Inc.
This product includes technology licensed from QUALCOMM®.
This product is manufactured or sold by Sierra Wireless Inc. or its affiliates under one or more patents
licensed from MMP Portfolio Licensing.
Sierra Wireless®, AirPrime®, AirLink®, AirVantage®, WISMO®, ALEOS® and the Sierra Wireless and
Open AT logos are registered trademarks of Sierra Wireless, Inc. or one of its subsidiaries.
Watcher® is a registered trademark of NETGEAR, Inc., used under license.
Windows® and Windows Vista® are registered trademarks of Microsoft Corporation.
Macintosh® and Mac OS X® are registered trademarks of Apple Inc., registered in the U.S. and other
countries.
QUALCOMM® is a registered trademark of QUALCOMM Incorporated. Used under license.
Other trademarks are the property of their respective owners.
Contact Information
Sales information and technical support,
including warranty and returns
Corporate and product information
Web: sierrawireless.com/company/contact-us/
Global toll-free number: 1-877-687-7795
6:00 am to 5:00 pm PST
Web: sierrawireless.com
41110363 Rev 4.0 October 18, 2017 3
Product Technical Specification
Document History
Vers ion Date Upda tes
1.0 January 26, 2017 Creation
1.1 February 01, 2017 Changed remaining instances of SIM to USIM
Table 51. Ordering Information ....................................................................................................... 58
41110363 Rev 4.0 October 18, 2017 9
1. Introduction
This document is the Product Technical Specification for the AirPrime HL7650 Embedded Module. It
defines the high-level product features and illustrates the interfaces for these features. This document
is intended to cover the hardware aspects of the product, including electrical and mechanical.
The AirPrime HL7650 belongs to the AirPrime HL Series from Essential Connectivity Module family.
These are industrial grade Embedded Wireless Modules that provides data connectivity on LTE and
3G networks (as listed in Table 1 Supported Bands/Connectivity).
The HL7650 supports a large variety of interfaces such as USB 2.0, UART, Digital Audio, ADC, USIM
and GPIOs to provide customers with the highest level of flexibility in implementing high-end
solutions.
The AirPrime HL7650 belongs to the Common Flexible Form Factor (CF3) family of modules. This
family consists of a series of WWAN modules that share the same mechanical dimensions (same
width and length with varying thicknesses) and footprint. The CF
solution to a series of problems faced commonly in the WWAN module space as it:
Accommodates multiple radio technologies (from 3G to LTE advanced) and band groupings
Supports bit-pipe (Essential Module Series) and value add (Smart Module Series) solutions
Offers electrical and functional compatibility
Provides Direct Mount as well as Socket-ability depending on customer needs
3
form factor provides a unique
1.2. Physical Dimensions
AirPrime HL7650 modules are compact, robust, fully shielded modules with the following dimensions:
Length: 23 mm
Width: 22 mm
Thickness: 2.5 mm
Weight: 3.5 g
Note: Dimensions specified above are typical values.
41110363 Rev 4.0 October 18, 2017 10
Product Technical Specification Introduction
1.3. General Features
The table below summarizes the AirPrime HL7650 features.
Table 2. General Features
Feat ure Descrip tion
Small form factor (146-pad solderable LGA pad) – 23mm x 22mm x
2.5mm (nominal)
Physical
Electrical Single or double supply voltage (VBATT and VBATT_PA) – 3.2V – 4.5V
RF Quad-band LTE (B3, B5, B8 and B28) and tri-band UMTS (B1, B5 and B8)
USIM interface
Metal shield can
RF connection pads (RF main interface)
Baseband signals connection
Dual SIM Single Standby (DSSS)
1.8V/3V support
SIM extraction / hot plug detection
SIM/USIM support
Conforms to ETSI UICC Specifications.
Supports SIM application tool kit with proactive SIM commands
Application interface
Protocol stack
Note: Although UIM2 connectivity is available in the hardware, this feature is
not activated in the firmware.
NDIS NIC interface support (Windows 7, Windows 8, Linux)
MBIM support
Multiple non-multiplexed USB channel support
Dial-up networking
USB selective suspend to maximize power savings
CMUX multiplexing over UART
AT command interface – 3GPP 27.007 standard, plus proprietary
extended AT commands
LTE mode operation:
LTE FDD, bandwidth 1.4-20 MHz
System Release: 3GPP Rel. 9
Category 1 (up to 10 Mbit/s in downlink, 5 Mbit/s in uplink)
Rx Diversity
Max modulation 64 QAM DL, 16 QAM UL
Intra-frequency and inter-frequency mobility
SON ANR
Public Warning System PWS
HSDPA (High Speed Downlink Packet Access)
Compliant with 3GPP Rel. 8
Category 10 (10.1Mbps)
IPv6 support
HSUPA (High Speed Uplink Packet Access)
Compliant with 3GPP Release 8
Category 6 (5.76Mbps)
41110363 Rev 4.0 October 18, 2017 11
Product Technical Specification Introduction
Feat ure Descrip tion
SMS over SGs and IMS
SMS MO and MT
SMS saving to SIM card or ME storage
SMS reading from SIM card or ME storage
SMS
Connectivity
Environmental
RTC Real Time Clock (RTC) with calendar
SMS sorting
SMS concatenation
SMS Status Report
SMS replacement support
SMS storing rules (support of
Multiple (up to 20) cellular packet data profiles
Sleep mode for minimum idle power draw
Mobile-originated PDP context activation / deactivation
Support QoS profile
Release 99 QoS negotiation – Background, Interactive, and
Streaming
Static and Dynamic IP address. The network may assign a fixed IP
address or dynamically assign one using DHCP (Dynamic Host
Configuration Protocol).
Supports PAP and CHAP authentication protocols
PDP context type (IPv4, IPv6, IPv4v6). IP Packet Data Protocol context
RFC1144 TCP/IP header compression
Operating temperature ranges (industrial grade):
Class A: -30°C to +70°C
Class B: -40°C to +85°C
AT+CNMI, AT+CNMA
)
41110363 Rev 4.0 October 18, 2017 12
Product Technical Specification Introduction
1.4. Architecture
The figure below presents an overview of the AirPrime HL7650 internal architecture and external
interfaces.
VBAT T
GND
VGPIO
BAT_RTC
USIM1
USIM2
USB
GPIO x 12
LGA-
146
UART1 (8 pins)
PWR_ON_N
RESET_IN_N
ADC x 2
32K_CLKOUT
L
2
6
C
_
K
M
PCM
JTAG
TX_ON
O
T
U
26MHz
Figure 1. Architecture Overview
1.5. Interfaces
Baseband
Memory
(Flash + RAM)
MCUDSP
PMURF
Analog Baseband
Peripherals
32.768KHz
R
_
X
TX_LTE
X
R
AirPrime HL7650
n
R
M
F
i
Dulpexer
E
T
L
PA
SAW
L
_
E
T
Filters
Antenna
R
F
Switch
Antenna
F
R
Switch
a
LGA-
146
RF DIV
The AirPrime HL7650 module provides the following interfaces and peripheral connectivity:
1x – VGPIO
1x – BAT_RTC Backup Battery Interface
2x – 1.8V/3V USIM
1x – USB 2.0
12x – GPIOs (1 of which is multiplexed)
1x – 8-wire UART
1x – Active Low PWR_ON_N
1x – Active Low RESET_IN_N
2x – ADC
2x – System Clock out (32.768 KHz and 26 MHz)
1x – Digital Audio Interface (PCM)
1x – JTAG Interface
1x – RF Main Antenna
1x – RF Diversity
1x – TX Indicator
41110363 Rev 4.0 October 18, 2017 13
Product Technical Specification Introduction
1.6. Connection Interface
The AirPrime HL7650 module is an LGA form factor device. All electrical and mechanical connections
are made through the 146 Land Grid Array (LGA) pads on the bottom side of the PCB.
Figure 2. Mechanical Overview (Top and Bottom Views)
The 146 pads have the following distribution:
66 inner signal pads, 1x0.5mm, pitch 0.8mm
1 reserved test point (do not connect), 1.0mm diameter
7 test point (JTAG), 0.8mm diameter, 1.20mm pitch
USIM connector Adding ESD protection is highly recommended at the point where
Other host signals
JESD22-A115 ± 200V Machine Model
JESD22-C101C ± 250V Charged Device Model
the USIM contacts are exposed, and for any other signals that
would be subjected to ESD by the user.
1.8. Environmental and Certifications
1.8.1. Environmental Specifications
The environmental specification for both operating and storage conditions are defined in the table
below.
Table 4. Environmental Specifications
Cond iti ons Rang e
Operating Class A -30°C to +70°C
Operating Class B -40°C to +85°C
Storage -40°C to +85°C
Class A is defined as the operating temperature ranges that the device:
Shall exhibit normal function during and after environmental exposure.
Shall meet the minimum requirements of 3GPP or appropriate wireless standards.
Class B is defined as the operating temperature ranges that the device:
Shall remain fully functional during and after environmental exposure
Shall exhibit the ability to establish an SMS or DATA call (emergency call) at all times even
when one or more environmental constraint exceeds the specified tolerance.
Unless otherwise stated, full performance should return to normal after the excessive
constraint(s) have been removed.
41110363 Rev 4.0 October 18, 2017 15
Product Technical Specification Introduction
1.8.2. Regulatory
Sierra Wireless hereby declares that the HL7650 is in compliance with all essential requirements of
Directive <TBD>.
The Declaration of Conformity will be available for viewing at the following location in the EU
community:
Sierra Wireless (UK) Limited
Suite 5, The Hub
Fowler Avenue
Farnborough Business Park
Farnborough, United Kingdom GU14 7JP
1.8.3. RoHS Directive Compliant
The AirPrime HL7650 module is compliant with RoHS Directive 2011/65/EU which sets limits for the
use of certain restricted hazardous substances. This directive states that “from 1st July 2006, new
electrical and electronic equipment put on the market does not contain lead, mercury, cadmium,
hexavalent chromium, polybrominated biphenyls (PBB) or polybrominated diphenyl ethers (PBDE)”.
1.8.4. Disposing of the Product
This electronic product is subject to the EU Directive 2012/19/EU for Waste Electrical
and Electronic Equipment (WEEE). As such, this product must not be disposed of at a
municipal waste collection point. Please refer to local regulations for directions on how
to dispose of this product in an environmental friendly manner.
1.9. References
[1] AirPrime HL Series Customer Process Guidelines
Reference Number: 4114330
[2] AirPrime HL76xx AT Commands Interface Guide
Reference Number: 4118395
[3] AirPrime HL Series Development Kit User Guide
Reference Number: 4114877
41110363 Rev 4.0 October 18, 2017 16
2. Pad Definition
AirPrime HL7650 pads are divided into 2 functional categories.
Core functions and associated pads cover all the mandatory features for M2M connectivity and will be available by default across all CF3 family of
modules. These Core functions are always available and always at the same physical pad location. A customer platform using only these functions
and associated pads is guaranteed to be forward and/or backward compatible with the next generation of CF3 modules.
Extension functions and associated pads bring additional capabilities to the customer. Whenever an Extension function is available on a module, it
is always at the same pad location.
Other pads marked as “not connected” or “reserved” should not be used.
Table 5. Pad Definition
Pad
#
1 GPIO1 General purpose input/output I/O I, T - 1.8V Left Open Extension
2 UART1_RI UART1 Ring indicator O O, L - 1.8V Connect to test point Core
3 UART1_RTS UART1 Request to send I I, T/PU L 1.8V Connect to test point Core
4 UART1_CTS UART1 Clear to send O I, T/PU L 1.8V Connect to test point Core
5 UART1_TX UART1 Transmit data I I, T/PD - 1.8V Connect to test point Core
6 UART1_RX UART1 Receive data O I, T/PU - 1.8V Connect to test point Core
7 UART1_DTR UART1 Data terminal ready I I, T/PD L 1.8V Connect to test point Core
8 UART1_DCD UART1 Data carrier detect O O, L L 1.8V Connect to test point Core
9 UART1_DSR UART1 Data set ready O O, H L 1.8V Connect to test point Core
10 GPIO2 General purpose input/output I/O O, L - 1.8V Connect to test point Core
11 RESET_IN_N Input reset signal I N/A L 1.8V Left Open Core
Signal Na me Function I/O
I/O HW
Reset
Stat e
Acti ve
Low/ Hi gh
Power
Supp ly
Domain
Recomm end ation
for Unused P ads
Type
41110363 Rev 4.0 October 18, 2017 17
Product Technical Specification Pad Definition
Pad
#
12 USB_D-
13 USB_D+
14 NC Not Connected - - - Not connected
15 NC Not Connected - - - Not connected
16 USB_VBUS USB VBUS I N/A - 5V Connect to test point Extension
17 NC Not Connected (Reserved for future use) - - - Left Open Not connected
18 NC Not Connected (Reserved for future use) - - - Left Open Not connected
19 NC Not Connected (Reserved for future use) - - - Left Open Not connected
20 NC Not Connected (Reserved for future use) - - - Left Open Not connected
21 BAT_RTC Power supply for RTC backup I/O N/A - 1.8V Left Open Extension
22 26M_CLKOUT 26MHz System Clock Output O I, T/PD - 1.8V Left Open Extension
23 32K_CLKOUT 32.768kHz System Clock Output O I, T/PD - 1.8V Left Open Extension
24 ADC1 Analog to digital converter I N/A - 1.2V Left Open Extension
25 ADC0 Analog to digital converter I N/A - 1.2V Left Open Extension
26 UIM1_VCC 1.8V/3V USIM1 Power supply O N/A - 1.8V/3V Mandatory connection Core
27 UIM1_CLK 1.8V/3V USIM1 Clock O O, L - 1.8V/3V Mandatory connection Core
28 UIM1_DATA 1.8V/3V USIM1 Data I/O O, L - 1.8V/3V Mandatory connection Core
29 UIM1_RESET 1.8V/3V USIM1 Reset O O, L L 1.8V/3V Mandatory connection Core
Note: If not specified, all electrical values are given for VBATT=3.7V and an operating temperature of
25°C.
For standard applications, VBATT and VBATT_PA must be tied externally to the same power
supply. For some specific applications, AirPrime HL7650 module supports separate VBATT and
VBATT_PA connection if requirements below are fulfilled.
3.1. Power Supply
The AirPrime HL7650 module is supplied through the VBATT and VBATT_PA signals.
Refer to the following table for the pad description of the Power Supply interface.
Table 7. Power Supply Pad Description
Pad NumberSignal Nam eI/ODescr ipt ion
63 VBATT I Power supply (base band)
61, 62 VBATT_PA I Power supply (radio frequency)
37, 39, 48, 67-70, 167-234 GND Ground
Refer to the following table for the electrical characteristics of the Power Supply interface.
Table 8. Power Supply Electrical Characteristics
Suppl y Min imu m Typi cal Maximum
VBATT voltage (V) 3.21 3.7 4.5
VBATT_PA voltage (V)
Full Specification
VBATT_PA voltage (V)
Extended Range
1 This value has to be guaranteed during the burst
2 No guarantee of 3GPP performances over extended range
Note: Load capacitance for VBATT is around 140µF ± 20% embedded inside the module.
Load capacitance for VBATT_PA is around 20µF ± 20% embedded inside the module.
The following table lists the current consumption of the AirPrime HL7650 at different conditions.
Note: Typical values are defined for VBATT/VBATT_PA at 3.7V and 25°C, for 50Ω impedance at all RF
Table 9. Current Consumption
Para met er Typi c al Maximum Un it
Off mode 110
Sleep mode – LTE
DRX8
USB disconnected
Sleep mode – WCDMA
DRX8
USB disconnected
LTE in communication mode
(TX Max)
WCDMA in communication
mode (TX Max)
ports with VSWR1:1 and CMW500. Maximum values are defined with worst conditions among
supported ranges of voltages and temperature (50Ω, VSWR1:1 and CMW500).
300
Band 3 1.7 5.5 mA
Band 5 1.9 6.0 mA
Band 8 1.7 5.7 mA
Band 28 1.9 6.0 mA
Band 1 1.2 4.95 mA
Band 5 1.2 4.95 mA
Band 8 1.2 4.95 mA
Band 3
Band 5
Band 8
Band 28
Band 1
Band 5
Band 8
595 740
585 730
665 815
765 920
515 630
490 605
490 610
µA
mA
mA
mA
mA
mA
mA
mA
Note: Maximum current peak measured for VSWR3:1 is 1100 mA.
Table 10. Current Consumption per Power Supply
Para met er (at n omi nal voltage, 3.7 V) Typi cal Maximum Unit
The VGPIO output is available when the AirPrime HL7650 module is switched ON.
Refer to the following table for the pad description of the VGPIO interface.
Table 11. VGPIO Pad Description
Pad Number Sign al Name
45 VGPIO O GPIO voltage output
I/O
Desc rip tion
Refer to the following table for the electrical characteristics of the VGPIO interface.
Table 12. VGPIO Electrical Characteristics
Para met er Mini mum Typical Maxi mum Remarks
Voltage level (V) 1.7 1.8 1.9 Both active mode and sleep mode
Current capability
Active Mode (mA)
Current capability
Sleep Mode (mA)
Rise Time (ms) - - 1.5 Start-Up time from 0V
- - 50
- - 3
Power management support up to
50mA output in Active mode
Power management support up to
3mA output in Sleep mode
3.4. BAT_RTC
The AirPrime HL7650 module provides an input/output to connect a Real Time Clock power supply.
This pad is used as a back-up power supply for the internal Real Time Clock. The RTC is supported
when VBATT is available but a back-up power supply is needed to save date and hour when VBATT
is switched off.
If VBATT is available, the back-up battery can be charged by the internal 1.8V power supply regulator.
Refer to the following table for the pad description of the BAT_RTC interface.
Table 13. BAT_RTC Pad Description
Pad Number
21 BAT_RTC I/O Power supply for RTC backup
Sign al Name
I/O
Descrip tion
Refer to the following table for the electrical characteristics of the BAT_RTC interface.
Max charging current (@VBATT=3.7V) - 25 (TBC) - mA
3.5. USIM Interface
The AirPrime HL7650 has two physical USIM interfaces, UIM1 and UIM2.
Both UIM1 and UIM2 allow control of a 1.8V/3V USIM and is fully compliant with GSM 11.11
recommendations concerning SIM functions.
The five signals used by the UIMx interface are as follows:
UIMx_VCC: Power supply
UIMx_CLK: Clock
UIMx_DATA: I/O port
UIMx_RESET: Reset
UIMx_DET: Hardware SIM detection
UIM1 is used in single SIM applications, and has optional support for dual SIM applications with an
external SIM switch (for use in Dual SIM Single Standby (DSSS) applications).
A second UIM interface, UIM2, is also available for Dual SIM Single Standby (DSSS) option.
Note: Although UIM2 connectivity is available in the hardware, this feature is not activated in the firmware.
For USIM design examples, refer to section 5.9 USIM Application.
Refer to the following table for the pad description of both UIM interfaces.
Refer to the following table for the electrical characteristics of both UIM1 and UIM2 interfaces.
Table 17. UIM1 and UIM2 Electrical Characteristics
Para met er Minimum Typi cal Maximum Unit s Remarks
UIMx Interface Voltage
(VCC, CLK, IO, RESET)
UIMx Detect - 1.80 - V High active
UIMx_VCC Current - - 10 mA
UIMx_VCC Line Regulation - - 50 mV/V At Iout_Max
UIMx_VCC Power-up Setting Time
from power down
UIMx_CLK clock period (ti1) 205 307 - ns
UIMx_CLK high time (ti2) 82 - - ns
UIMx_CLK high time (ti3) 82 - - ns
UIMx_CLK rise time/fall time (tR / tF) - - 50 ns
UIMx_IO rise time/fall time (tR / tF) - - 1000 ns
- 2.9 - V The appropriate
- 1.80 - V
- 10 - µs
output voltage is auto
detected and selected
by software.
Max output current in
sleep mode = 3 mA
3.5.1. UIMx_CLK
The following figure shows the UIMx_CLK timing waveform.
Figure 6. UIMx Timing Waveform
3.5.2. UIMx_DET
UIMx_DET is used to detect and notify the application about the insertion and removal of a USIM
device in the USIM socket connected to the USIM interface (UIM1 or UIM2). When a USIM is
inserted, the state of UIMx_DET transitions from logic 0 to logic 1. Inversely, when a USIM is
removed, the state of UIMx_DET transitions from logic 1 to logic 0.
While UIM1_DET has a dedicated pad (pad 64), UIM2_DET is multiplexed with GPIO4 (pad 65).
Pad Number Signa l N ame Multi ple x I /O Power Supp ly Do mai n
46 GPIO6 I/O 1.8V
51 GPIO14 I/O 1.8V
52 GPIO10 I/O 1.8V
53 GPIO11 I/O 1.8V
54 GPIO15 I/O 1.8V
65 GPIO4 UIM2_DET I/O 1.8V
66 GPIO5 I/O 1.8V
3.9. Main Serial Link (UART1)
The main serial link (UART1) is used for communication between the AirPrime HL7650 module and a
PC or host processor. It consists of a flexible 8-wire serial interface that complies with RS-232
interface.
The supported baud rates of the UART1 are 300, 1200, 2400, 4800, 9600, 19200, 38400, 57600,
115200, 230400, 460800, 500000, 750000, 921600, 1843200, 3000000 and 3250000 bit/s.
The signals used by UART1 are as follows:
TX data (UART1_TX)
RX data (UART1_RX)
Request To Send (UART1_RTS)
Clear To Send (UART1_CTS)
Data Terminal Ready (UART1_DTR)
Data Set Ready (UART1_DSR)
Data Carrier Detect (UART1_DCD)
Ring Indicator (UART1_RI)
Note: Signal names are according to PC view.
Refer to the following table for the pad description of the main serial link (UART1) interface.
Table 22. UART1 Pad Description
Pad # S ign al Name* I/O* Descript ion
2 UART1_RI O Signal incoming calls (data only), SMS, etc.
3 UART1_RTS I Request to send
4 UART1_CTS O AirPrime HL7650 is ready to receive AT commands
5 UART1_TX I Transmit data
6 UART1_RX O Receive data
7 UART1_DTR I (active low)
8 UART1_DCD O Signal data connection in progress
9 UART1_DSR O Signal UART interface is ON
Prevents the AirPrime HL7650 from entering sleep mode,
switches between data mode and command mode, and
wakes the module up.
A low-level signal has to be provided to switch the AirPrime HL7650 module ON.
It is internally connected to the permanent 1.8V supply regulator inside the HL7650 via a pull-up
resistor. Once VBAT is supplied to the HL7650 module, this 1.8V supply regulator will be enabled and
so the PWR_ON_N signal is by default at high level.
Refer to the following table for the pad description of the PWR_ON_N interface.
Table 23. PWR_ON_N Pad Description
Pad Number Sign al Name
59 PWR_ON_N I Power On the HL7650 module
I/O
Desc rip tion
Refer to the following table for the electrical characteristics of the PWR_ON_N interface.
Table 24. PWR_ON_N Electrical Characteristics
Para met er Minimum T ypi cal Maxim um
Input Voltage-Low (V) - 0.51
Input Voltage-High (V) 1.33 - 2.2
Power-up period (ms) from PWR_ON_N falling edge 2000 - -
PWR_ON_N assertion time (ms) 25
Note: As PWR_ON_N is internally pulled up with 100kΩ, an open collector or open drain transistor must
be used for ignition.
VGPIO is an output from the module that can be used to check if the module is active.
When VGPIO = 0V, the module is OFF
When VGPIO = 1.8V, the module is ON (it can be in idle, communication or sleep mode)
Note: PWR_ON_N signal cannot be used to power the module off. To power the module off, use AT
command
AT+CPWROFF
.
3.11. Reset Signal (RESET_IN_N)
To reset the module, a low-level pulse must be sent on the RESET_IN_N pad for 20ms. This action
will immediately restart the AirPrime HL7650 module with the PWR_ON_N signal at low level. (If the
PWR_ON_N signal is at high level, the module will be powered off.) As RESET_IN_N is internally
pulled up, an open collector or open drain transistor should be used to control this signal.
The RESET_IN_N signal will reset the registers of the CPU and reset the RAM memory as well, for
the next power on.
Note: As RESET_IN_N is referenced to the VRTC (200kΩ pull-up resistor to VRTC 1.8V) an open
Refer to the following table for the pad description of the RESET_IN_N interface.
41110363 Rev 4.0 October 18, 2017 31
collector or open drain transistor has to be used to control this signal.
Refer to the following table for the electrical characteristics of the RESET_IN_N interface.
Table 26. RESET_IN_N Electrical Characteristics
Para met er Minimum T ypi cal Maxim um
Input Voltage-Low (V) - 0.51
Input Voltage-High (V) 1.33 - 2.2
Reset assertion time (ms) 20 - -
Power-up period (ms) from RESET_IN_N falling edge* 2000 - -
* With the PWR_ON_N Signal at low level.
3.12. Analog to Digital Converter (ADC)
Two Analog to Digital Converter inputs, ADC0 and ADC1, are provided by the AirPrime HL7650
module. These converters are 10-bit resolution ADCs ranging from 0 to 1.2V.
Typical ADC use is for monitoring external voltage, wherein an application is used to safely power
OFF an external supply in case of overvoltage.
Refer to the following table for the pad description of the ADC interface.
Table 27. ADC Pad Description
Pad Number Sign al Name
24 ADC1 I Analog to digital converter
25 ADC0 I Analog to digital converter
I/O
Desc rip tion
Refer to the following table for the electrical characteristics of the ADC interface.
Table 28. ADC Electrical Characteristics
Para met er Minimum Typical Maximum Remarks
ADCx Resolution (bits) - 10 -
Input Voltage Range (V) 0 - 1.2 General purpose input
The AirPrime HL7650 module supports two digital clock out interfaces.
Enabling or disabling the clock out feature can be done using AT commands. For more information
about AT commands, refer to document [2] AirPrime HL76xx AT Commands Interface Guide.
Refer to the following table for the pad description of the clock out interface.
Table 29. Clock Out Interface Pad Description
Pad Number Si gnal Nam e I/O I/O Type Descri ption
22 26M_CLKOUT O 1.8V 26MHz Digital Clock output
23 32K_CLKOUT O 1.8V 32.768kHz Digital Clock output
Refer to the following table for the electrical characteristics of the clock out interface.
Table 30. Clock Out Interface Electrical Characteristics
Para met er Symb ol Mini mum T ypi cal Maxim um Un its
CLKOUTn period at 26MHz (tr1)
CLKOUTn low time at 26MHz (tr2)
CLKOUTn high time at 26MHz (tr3)
CLKOUTn period at 32.768KHz (tr1)
CLKOUTn low time at 32.768KHz (tr2)
CLKOUTn high time at 32.768KHz (tr3)
Period jitter - - 4 ns
- 38 - ns
10 - - ns
10 - - ns
- - - ns
- - - ns
- - - ns
The following figure shows the clock out (CLKOUT) timing waveform.
The Digital Audio (PCM) Interface allows connectivity with standard audio peripherals. It can be used,
for example, to connect an external audio codec.
The programmability of this interface allows addressing a large range of audio peripherals.
The PCM interface is a high speed full duplex interface that can be used to send and receive digital
audio data to external audio ICs. The Digital Audio Interface also features the following:
PCM master or slave
16 bits data word length, linear mode
MSB first
Configurable PCM bit clock rate on 256kHz, 384kHz or 512kHz
Long frame sync
The signals used by the Digital Audio Interface are as follows:
PCM_SYNC: The frame synchronization signal delivers an 8 kHz frequency pulse that
synchronizes the frame data in and the frame data out.
PCM_CLK: The frame bit clock signal controls data transfer with the audio peripheral.
PCM_OUT: The frame “data out” relies on the selected configuration mode.
PCM_IN: The frame “data in” relies on the selected configuration mode.
Refer to the following table for the pad description of the digital audio interface.
Table 31. Digital Audio Pad Description
Pad # Sig nal N ame I/O I/O Type Descrip tion
36 PCM_CLK O 1.8V PCM clock
35 PCM_SYNC O 1.8V PCM synchronization
34 PCM_IN I 1.8V PCM data in
33 PCM_OUT O 1.8V PCM data out
Refer to the following table for the electrical characteristics of the digital audio interface.
Table 32. Digital Audio Electrical Characteristics
Sign al Descr ipt ion Minim um Typic al M aximum Uni t
The RF interface of the AirPrime HL7650 module allows the transmission of RF signals. This interface
has a 50Ω nominal impedance.
Note that if the final application is a single antenna receiver (does not use the diversity antenna), it is
recommended that the diversity antenna be disabled using AT command AT+WMANTSEL. Disabling
the diversity antenna when not used:
prevents any noise in the diversity antenna input from degrading the overall sensitivity
performance of the main RF input, and
reduces the power consumption of the module.
Refer to document [2] AirPrime HL76xx AT Commands Interface Guide for more information
regarding AT+WMANTSEL.
3.16.1. RF Connection
A 50Ω (with maximum VSWR 1.1:1, and 0.5 dB loss) RF track is recommended to be connected to
standard RF connectors such as SMA, UFL, etc. for antenna connection.
Refer to the following tables for the pad description of the RF interface.
Table 37. RF Main Connection
Pad Number RF Signal Imp edance VSW R R x (max) VSWR T x (max)
49 RF_MAIN 50Ω 1.5:1 1.5:1
Table 38. RF Diversity Connection
Pad Number RF Signal Imp edance VSW R R x (max) VSWR T x (max)
The AirPrime HL7650 provides a signal, TX_ON, for TX indication. The TX_ON is a 2.3V (TBC) signal
and its status signal depends on the module’s transmitter state.
Refer to the following table for the pad description of the TX_ON signal.
Table 41. TX_ON Indicator Pad Description
Pad Number Sig nal N ame F uncti on I/ O t ype P ower Supp ly Do main
60 TX_ON TX indicator O 2.3V (TBC)
Refer to the following table for the status of the TX_ON signal depending on the embedded module’s
state.
Table 42. Burst Indicator States
Embedded Module State TX_ON
During TX burst High
No TX Low
During TX burst, there is a higher current drain from the VBATT_PA power supply which causes a
voltage drop. This voltage drop from VBATT_PA is a good indication of a high current drain situation
during TX burst.
The blinking frequency is about 217 Hz in 2G, continuous in 3G (TBC) and blinking in 4G at (TBC) Hz.
The output logic high duration, T
, depends on the number of TX slots and is computed as
duration
follows:
T duration = T advance + (0.577ms x number of TX slots) + T delay
Apply a low-level logic to the PWR_ON_N pad (pad 59); within approximately 25ms, VGPIO will appear
to be at 1.8V. Either UART1 or the USB interface could be used to send AT commands. The AT
command interface is available in about 7 seconds after PWR_ON_N for either UART or USB.
When using UART, the AT command interface is available after the transition of UART1_CTS from high
to low level.
When using a USB connection, the HL7650 will start communicating with the host after USB
enumeration. The time when AT commands can be sent will depend on the initialization time on the
USB host.
Figure 16. PWR_ON_N Sequence with VGPIO Information
Note: As PWR_ON_N is internally pulled up with 100kΩ, an open collector or open drain transistor must be
The PWR_ON_N pad has the minimum assertion time requirement of 25ms, with LOW active. Once the
valid power on trigger is detected, the PWR_ON_N pad status can be left open.
used for ignition.
5.2. Module Switch-Off
AT command AT+CPWROFF enables the user to properly switch the AirPrime HL7650 module off.
Figure 17. Power OFF Sequence for PWR_ON_N, VGPIO
Note: PWR_ON_N is internally pulled up by 100kΩ to 1.8V.
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Product Technical Specification Design Guidelines
5.3. Hardware Fast Shut Down
The fast shutdown event can be triggered by either AT+CPWROFF=1 or a GPIO edge.
AT+CPWROFF=1
UART TX
or
GPIO Shutdown
Other GPIOs
VGPIO
Figure 18. Fast Shutdown Power OFF Sequence
t1 = 2 ms
IO TRIGGERED
t2 = 300 µs
t3 = 60 to 80 ms t4 = 180 to 1500 ms
Fast Detach
request
Fast Detach done
Shutdown request:
- NVMs and other processes
-GPIOs
t5 = 10 ms
All GPIO offVGPIO off
Note that the timings for fast detach and mobile shutdown (t3 and t4 in the diagram above) are
dependent on operators and network conditions.
Starting the shutdown procedure during the boot phase should be avoided as this may cause the
shutdown to take more time.
5.4. Emergency Power OFF
If required, the module can be switched off by controlling the RESET_IN_N pad (pad 11). This must
only be used in emergency situations if the system freezes (not responding to AT commands).
To perform an emergency power off, a low-level pulse must be sent on the RESET_IN_N pad for 20ms
while the PWR_ON_N signal is inactive (high level). This action will immediately shut the HL7650
module down and the registers of the CPU and RAM memory will be reset for the next power on.
5.5. Sleep Mode Management
AT command AT+KSLEEP enables sleep mode configuration. Note that this is only used with serial link
UART1.
AT+KSLEEP=0:
The module is active when DTR signal is active (low electrical level).
When DTR is deactivated (high electrical level), the module enters sleep mode after a while.
On DTR activation (low electrical level), the module wakes up.
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Product Technical Specification Design Guidelines
AT+KSLEEP=1:
The module determines when it enters sleep mode (when no more tasks are running).
“0x00” character on the serial link wakes the module up.
AT+KSLEEP=2: The module never enters sleep mode.
5.6. Power Supply Design
The AirPrime HL7650 module should not be supplied with voltage over 4.5V even temporarily or
however briefly.
If the system’s main board power supply unit is unstable or if the system’s main board is supplied with
over 4.5V, even in the case of transient voltage presence on the circuit, the module’s power amplifier
may be severely damaged.
To avoid such issues, add a voltage limiter to the module’s power supply lines so that VBATT and
VBATT_PA signal pads will never receive a voltage surge over 4.5V. The voltage limiter can be as
simple as a Zener diode with decoupling capacitors as shown in the diagram below.
Power Supply
D404
0.5 pF
Figure 19. Voltage Limiter Example
+
D405
C404
1.5 mF
+
C405
C407
150 µF
100 nF
VBATT/VBATT_PA
5.7. EMC and ESD Guidelines for USIM
Decoupling capacitors must be added according to the drawings below as close as possible to the
USIM connectors on UIMx_CLK, UIMx_RST, UIMx_VCC, UIMx_DATA and UIMx_DET signals to avoid
EMC issues and to comply with the requirements of ETSI and 3GPP standards covering the USIM
electrical interface.
A typical schematic including USIM detection is provided below.
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Product Technical Specification Design Guidelines
D100
UIM x_VCC
UIM x_DATA
12pF
UIM x_VCC
UIM x_RESE T
UIM x_CLK
DNI
100nF
VGPIO
1 VCC
2 RST
3 CLK
4 C4
9 SW_ASW_B 10
CN100
Figure 20. EMC and ESD Components Close to the USIM
GND 5
VPP 6
I/O 7
C8 8
1KΩ
100KΩ
UIM x_CLK
UIM x_RESET
UIM x_DET
1nF
UIM x_DATA
UIM x_DET
DNI
Sierra Wireless recommends using diode ESDALC6V1-5P6 ESD for D100.
5.8. ESD Guidelines for USB
When the USB interface is externally accessible, it is required to have ESD protection on the
USB_VBUS, USB_D+ and USB_D- signals.
Figure 21. ESD Protection for USB
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Product Technical Specification Design Guidelines
Note: It is not recommended to have an ESD diode with feedback path from USB_VBUS to either USB_D+
Sierra Wireless recommends using components:
90Ω DLP0NSN900HL2L EMC filter for FIL400, and
RCLAMP0503N or ESD5V3U2U-03LRH ESD diode for D400.
or USB_D-.
5.9. USIM Application
The AirPrime HL7650 supports either a single USIM design or a dual USIM configuration using DSSS
(Dual SIM Single Standby).
5.9.1. Single USIM Design
Single USIM design is supported using the following:
1 USIM slot
1 USIM connector
1 GPIO SIM detect
Figure 22. Single USIM Application (1 USIM Slot and 1 USIM Connector)
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Product Technical Specification Design Guidelines
5.9.2. Dual SIM Single Standby Design
Dual SIM Single Standby (DSSS) with fast network switching is supported using the following:
1 USIM slot
1 or 2 external switches
2 USIM connectors
2 GPIO SIM Detect
1 GPIO switch command
Figure 23. Dual SIM Single Standby Application (1 USIM Slot and 2 USIM Connectors)
41110363 Rev 4.0 October 18, 2017 50
6. Reliability Specification
AirPrime HL7650 module is tested against the Sierra Wireless Industrial Reliability Specification defined
below.
6.1. Reliability Compliance
AirPrime HL7650 modules connected on a development kit board application are compliant with the
following requirements.
Table 44. Standards Conformity
Abbr eviation Definition
IEC International Electro technical Commission
ISO International Organization for Standardization
6.2. Reliability Prediction Model
6.2.1. Life Stress Test
The following tests the AirPrime HL7650 module’s product performance.
Table 45. Life Stress Test
Desi gna tion Con ditio n
Performance Test
PT3T & PTRT
Standard: N/A
Special conditions:
Temperature:
Class A: -30°C to +70°C
Class B: -40°C to +85°C
Rate of temperature change: ± 3°C/min
The HL7650 module has been granted modular approval for mobile applications. Integrators may use
the HL7650 module in their final products without additional FCC certification if they meet the
following conditions. Otherwise, additional FCC approvals must be obtained.
1. At least 20 cm separation distance between the antenna and the user’s body must be
maintained at all times.
2. To comply with FCC regulations limiting both maximum RF output power and human
exposure to RF radiation, the maximum antenna gain including cable loss in a mobile-only
exposure condition must not exceed:
5 dBi in LTE Band 5
3. The HL7650 module must not transmit simultaneously with other collocated radio transmitters
within a host device.
4. The RF signal must be routed on the application board using tracks with a 50Ω characteristic
impedance. Basically, the characteristic impedance depends on the dielectric, the track width
and the ground plane spacing. In order to respect this constraint, Sierra Wireless
recommends using MicroStrip or StripLine structure and computing the Tracks width with a
simulation tool (like AppCad shown in the figure below and that is available free of charge at
http://www.agilent.com).
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Product Technical Specification FCC Regulations
If a multi-layered PCB is used, the RF path on the board must not cross any signal (digital,
analog or supply).
If necessary, use StripLine structure and route the digital line(s) "outside" the RF structure. An
example of proper routing is shown in the figure below.
Stripline and Coplanar design requires having a correct ground plane at both sides.
Consequently, it is necessary to add some vias along the RF path. It is recommended to use
Stripline design if the RF path is fairly long (more than 3cm), since MicroStrip design is not
shielded. Consequently, the RF signal (when transmitting) may interfere with neighbouring
electronics (AF amplifier, etc.). In the same way, the neighbouring electronics (microcontrollers, etc.) may degrade the reception performances. The antenna connector is
intended to be directly connected to a 50Ω antenna and no matching is needed.
5. A label must be affixed to the outside of the end product into which the HL7650 module is
incorporated, with a statement similar to the following:
This device contains FCC ID: N7NHL7650
6. A user manual with the end product must clearly indicate the operating requirements and
conditions that must be observed to ensure compliance with current FCC RF exposure
guidelines.
The end product with an embedded HL7650 module may also need to pass the FCC Part 15
unintentional emission testing requirements and be properly authorized per FCC Part 15.
Note: If this module is intended for use in a portable device, you are responsible for separate approval to
satisfy the SAR requirements of FCC Part 2.1093.
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8. Ordering Information
Table 51. Ordering Information
Mo del N ame Descr ipt ion Part N umb er
HL7650 HL7650 embedded module Contact Sierra Wireless for the latest SKU
DEV-KIT HL Series Development Kit 6000620
41110363 Rev 4.0 October 18, 2017 58
9. Terms and Abbreviations
Abbr eviation Definition
ADC Analog to Digital Converter
AGC Automatic Gain Control
AT Attention (prefix for modem commands)
CDMA Code Division Multiple Access
CF3 Common Flexible Form Factor
CLK Clock
CODEC Coder Decoder
CPU Central Processing Unit
DAC Digital to Analog Converter
DTR Data Terminal Ready
EGNOS European Geostationary Navigation Overlay Service
EMC Electromagnetic Compatibility
EMI Electromagnetic Interference
EN Enable
ESD Electrostatic Discharges
ETSI European Telecommunications Standards Institute
FDMA Frequency-division multiple access
GAGAN GPS aided geo augmented navigation
GLONASS Global Navigation Satellite System
GND Ground
GNSS Global Navigation Satellite System
GPIO General Purpose Input Output
GPRS General Packet Radio Service
GSM Global System for Mobile communications
Hi Z High impedance (Z)
IC Integrated Circuit
IMEI International Mobile Equipment Identification
I/O Input / Output
LED Light Emitting Diode
LNA Low Noise Amplifier
MAX Maximum
MIN Minimum
MSAS Multi-functional Satellite Augmentation System
N/A Not Applicable
PA Power Amplifier
PC Personal Computer
PCB Printed Circuit Board
PCL Power Control Level
PLL Phase Lock Loop
PWM Pulse Width Modulation
QZSS Quasi-Zenith Satellite System
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Product Technical Specification Terms and Abbreviations
Abbr evi at ion Defi nit ion
RF Radio Frequency
RFI Radio Frequency Interference
RMS Root Mean Square
RST Reset
RTC Real Time Clock
RX Receive
SCL Serial Clock
SDA Serial Data
SIM Subscriber Identification Module
SMD Surface Mounted Device/Design
SPI Serial Peripheral Interface
SW Software
PSRAM Pseudo Static RAM
TBC To Be Confirmed
TBD To Be Defined
TP Test Point
TX Transmit
TYP Typical
UART Universal Asynchronous Receiver-Transmitter
UICC Universal Integrated Circuit Card
USB Universal Serial Bus
UIM User Identity Module
VBATT Main Supply Voltage from Battery or DC adapter
VSWR Voltage Standing Wave Ratio
WAAS Wide Area Augmentation System
41110363 Rev 4.0 October 18, 2017 60
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